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die/punch

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John Rudd:
Ok, I know I'm supposed to be on vacation/holiday....... :D

But.... I tried to make a punch for some gaskets I need for my steam engine.....for the cylinder end caps.

I took a piece of brass bar and bored it to 1/2 in.... turned a piece of steel to match the hole diameter.....In the gasket paper, I can punch a hole, all is good...
Now, I need to make the outside dia 1"....so I made another block of steel (bar) turned to the right diameter with a hole in the centre to take the punch (1/2").. and used that to centre the gasket paper...with me so far?
Now, I machined another piece with an internal diameter to match, now the probs start....
When I try to cut the o/d, the punch doesnt cut a full circle....
Something is wrong! cant figure out what....the same thing happens with the 4 pcd holes ....

(I made the two blocks with holes machined to the pcd required and machined a punch to suit....)

So, how do you make your cylinder gaskets?

chipenter:
Cut the centre hole cover the gasket with copper ease push the cover on and just poke a sharp pin or drill tapping size , then screws cut off the excces with a knife .

Pete W.:
Hi there, John,

I was taught to make paper gaskets on the job with a ball pein hammer.  I guess that'd be a bit tricky at your size! 

awemawson:

--- Quote from: Pete W. on September 11, 2014, 04:39:29 AM ---Hi there, John,

I was taught to make paper gaskets on the job with a ball pein hammer.  I guess that'd be a bit tricky at your size!

--- End quote ---

Yes that was my first thought when this thread began, but then I realised that you'd need a very small toffee hammer !

75Plus:
I have used this set-up to make washers from shim stock. It should work for gaskets also.

Take a couple of inches of round stock of the required diameter and cut in half. On one piece bore a hole the size as the bore of your gasket. on the other piece turn a spigot the same diameter. Place the gasket stock that has the OD punched on the spigot and insert into the other half. Now you can use a knife or chuck it up in the lathe using the tail stock to hold the two halves together and, using a sharp tool , trim to size.

Regarding making gaskets with a ball pein hammer, the four ounce size that was my go to hammer is becoming hard to find and expensive.

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